<div class="input-group">
    <input class="input-datetime form-control" ng-model="dateValue" type="text" placeholder="{{placeholder}}" ng-required="required"/>
    <span class="input-group-btn">
        <button class="btn btn-default" type="button" ng-click="clear()"><i class="text-danger fa fa-times"></i></button>
    </span>
</div>
